Arnim, LUDWIG ACHIM VON, a fantastic but original German writer of romances, was born at Berlin in 1781. After devoting some years to the study of the physical sciences, he began his career as an imaginative author with Hollins Liebeleben (1802). He was especially interested in the old popular poetry, and stirred up among his countrymen a warmer sympathy for it by the publication, along with the poet Clemens Brentano, of Des Knaben Wunderhorn (3 vols. 1808–19). In 1809 appeared Der Wintergarten, a collection of novels; in 1810, a romance, Die Gräfin Dolores; in 1811, Halle und Jerusalem, a humorous dramatic poem; and in 1817, Die Kronenwächter, an historical novel. He died in 1831.—His wife, BETTINA VON ARNIM, a sister of Clemens Brentano, was born in 1785 at Frankfort, and married him in 1811. The great event of her early life was her enthusiastic attach- ment to Goethe, whom she first saw in 1807, he being then nearly sixty. The correspondence, published under the title of Goethes Briefwechsel mit einem Kind, in 1835, and translated by Bettina into English, is mainly founded on fancy. Her later works were semi-political in character. She died at Berlin, 20th January 1859. See Löper, Goethes Briefe an Bettina (1879).